Niaj hnub no, nyob rau hauv peb cov neeg nyiag nkas, nws muaj ntau heev rau thauj cov stepper motors nrog tib axis raws li lawv cov axis-tshwj xeeb tshaj yog thaum peb txuas lawv mus rau cov ntsia hlau los yog cab iav.Hmoov tsis zoo, stepper motors tsis tshua siv rau qhov kev thauj khoom no, thiab ua li ntawd nrog ntau lub zog yuav ua rau lub cev muaj zog.Tab sis tsis txhob ntshai.Yog tias koj pom koj tus kheej hauv qhov xwm txheej no, [Voind Robot] muab rau koj nrog kev hloov kho yooj yim tab sis zoo heev uas tso cai rau koj lub cev muaj zog los tswj cov axial loads yam tsis muaj teeb meem.
Nyob rau hauv rooj plaub ntawm [Voind Robot's], lawv pib nrog cov cab iav tsav ntawm lub caj npab neeg hlau.Nyob rau hauv lawv cov ntaub ntawv, lub txav caj npab yuav siv ib tug loj axial load rau lub stepping ncej los ntawm ib tug cab - mus txog 30 Newtons.Xws li ib qho kev thauj khoom tuaj yeem yooj yim puas rau cov kabmob sab hauv ntawm lub tshuab stepper lub sijhawm luv luv, yog li lawv xaiv qee qhov kev txhawb nqa ob sab.Txhawm rau daws qhov teeb meem no, ob lub thrust bearings tau qhia, ib qho ntawm txhua sab ntawm lub ncej.Lub luag hauj lwm ntawm cov thrust bearings yog hloov lub zog ntawm lub ncej mus rau lub cev muaj zog vaj tse, uas yog ib tug muaj zog qhov chaw rau siv no load.
Cov txheej txheem no yooj yim heev, qhov tseeb nws tau ntau tshaj tsib xyoos.Txawm li cas los xij, nws tseem ceeb heev niaj hnub no rau cov chaw tsim khoom 3D tshuab luam ntawv xav txog kev txuas cov hlau lead rau Z-axis stepper lub cev muaj zog.Nyob ntawd, ib qho thrust bearing tuaj yeem tshem tawm txhua qhov kev ua si axial thiab ua rau muaj kev tsim kho tag nrho.Peb nyiam lub tshuab tsim kev txawj ntse zoo li no.Yog tias koj tab tom nrhiav ntau lub tswv yim tsim lub tshuab luam ntawv, mus saib [Moritz's] Workhorse Printer article.
Yog lawm, ob peb xyoos dhau los kuv tau tsim lub tshuab luam ntawv i3 variant hu ua i2 Samuel.Nws yog tsim los nrog thrust bearing ntawm z kom tshem tawm lub siab ntawm lub stepper
Qhov tso cai axial load ntawm feem ntau stepper motors tsis tshaj qhov loj * g.Yog tias nws ntau dua, koj tus qauv tsim muaj qhov tsis txaus siab lossis tsis ua haujlwm, thiab qhov no feem ntau yog thawj.
tswv yim zoo.Los ntawm txoj kev, leej twg tuaj yeem qhia kuv qhov twg kuv tuaj yeem yuav cov kabmob me me?Kuv muaj ob peb tus kiv cua tseem ceeb nrog Doom ™ rumble, tab sis lawv tseem ua haujlwm.
"Qhov kev ua kom yuam kev no yooj yim heev, nws ua tau ntau dua tsib xyoos."Yog lawm, kuv pom zoo tias cov kabmob thrust tau tsim ntau tshaj tsib xyoos dhau los.
Stepper motors feem ntau zoo li muaj qee qib ntawm axial ntab hauv lub ncej thiab kho nrog lub caij nplooj ntoos hlav ntxhua.Qhov no yog khaws cov axial load ntawm cov kabmob hauv qhov tshwj xeeb thaum lub cev muaj zog ua kom sov thiab sib txawv thermal expansion tshwm sim.Cov kev npaj qhia ntawm no tsis muab thermal expansion, yog li tseem yuav muaj teeb meem mus sij hawm ntev nrog lub cev muaj zog bearings.Lub xub ntiag los yog tsis tuaj kawm ntawv yuav nyob ntawm qhov chaw ntawm lub ncej uas lub thrust bearing ntsia.Qhov zoo tshaj plaws, cov cuab yeej thrust yuav tag nrho nyob rau ntawm ib kawg, thiab lwm qhov kawg yuav ntab dawb li qhov nthuav dav.Qhov tseeb, nws yog qhov zoo tshaj plaws rau tsuas yog nruab lub thrust bearing ntawm qhov kawg tso zis, kom ze li qhov ua tau rau cov zis bearing, thiab tso siab rau tus thawj cov zis bearing los tswj lub thrust nyob rau hauv cov kev taw qhia sab nraum lub cev muaj zog.Piv txwv li (rau kev ua qauv qhia) ib tug 604 bearing nrog ib tug 4 hli ncej (hloov ntawm Nema23′s 6 hli ncej), ces lub radial radial load yog 360N thiab rated axial load yog 0.25 zaug (0.5 zaug rau loj bearings).Yog li qhov tso zis kawg Tus thawj sib sib zog nqus groove pob yuav tsum ua hauj lwm, nrog ib tug axial load ntawm 90N.Hauv qhov piv txwv tau muab (30N), hais txog kev coj tus kheej lub neej, nws zoo li tsis muaj kev txhawj xeeb.Txawm li cas los xij, lub axial ntab hauv lub ncej tiv thaiv lub caij nplooj ntoos hlav preloaded yuav tsum tau hais txog, thiab ib qho kev sib tw ntawm qhov kawg tso tawm tuaj yeem ua qhov no.
Txawm li cas los xij, nws yog qhov zoo dua los muab cov cab cab nrog ib qho kev sib cais ntawm cov kabmob thrust bearings thiab tso cai rau tag nrho lub cev muaj zog ntab axially nrog cov khoom tsim nyog torque.Qhov no yog ib qho kev sib koom ua ke uas lub cev muaj zog tsav lub pob ntsia hlau nrog nws tus kheej angular contact bearing teeb tsa los ntawm Lovejoy lossis zoo sib xws.Txawm li cas los xij, qhov no ntxiv ntau qhov ntev ntxiv.
Andy, Kuv yuav sau tib yam: Nws zoo li tau ntxiv cov kabmob uas tsis muaj qhov khoob, cia li cia siab tias qhov tseeb bearings tuaj yeem tiv taus lub nra.
Nws yog kab lus kawg.Tshwj tsis yog tias siv cov kabmob tapered roller bearings lossis angular contact ball bearings lossis cais cov kabmob sib cais, lub cev muaj zog yuav tsum tsis txhob dais qhov loj axial load ntawm nws ncej.
Lub cev muaj zog yuav tsum tsav lub ncej los ntawm txoj siv, iav, elastic coupling los yog spline coupling.Qhov ntau dua qhov rigidity ntawm kev sib txuas, qhov siab dua qhov yuav tsum tau muaj ntawm lub cev muaj zog rau kev sib dhos ntawm cov ncej.
Pom zoo, qhov kev npaj xaiv ntawm no tuaj yeem ua rau muaj kev phom sij rau lub neej kev pabcuam ntawm lub cev muaj zog.Lub pob bearings ntawm lub cev muaj zog nws tus kheej yog qhov tseem yuav dais ib qho loj.Daim duab zoo li pom qhov chaw txaus los txhawb tus cab.Kev xaiv los txhawb tus cab nrog 2 lub kaum sab xis ntawm ob qhov kawg thiab tsav nws los ntawm lub tog raj kheej lossis lub qhov tseem ceeb yog qhov kev xaiv zoo dua, IMHO.Kev hloov pauv hloov pauv hauv nruab nrab yog kev txhim kho ntxiv rau nws.
Ua ntej koj kov lub caij nplooj ntoos hlav ntxhua khaub ncaws rau hauv qab, lub ime stepper yuav tsis tshua dais axial load, ncej thiab bearing yog nyob rau hauv zawv zawg haum.
Nyob ntawm tus stepper.Kuv kuj tau pom tias yog hais tias lub caij nplooj ntoos hlav ntxhua khaub ncaws compressed dhau deb, ib los yog ob qho tib si ntawm lawv cov bearings yuav ris lub axial load.
Yog li zoo li kuv tau hais, tsuav yog koj tsis nyob hauv qab lub caij nplooj ntoos hlav ntxhua khaub ncaws, yuav tsis muaj ntau tshaj axial load ntawm cov kabmob.
Yog, tab sis cov tshuab ntxhua khaub ncaws caij nplooj ntoos hlav no feem ntau tsis yooj yim, yog li hauv cov ntawv thov no, koj tuaj yeem yooj yim hauv qab lawv tawm.
@ThisGuy Qhov no yog tus yuam sij rau thrust bearings, lawv kaw lub rotor nyob rau hauv qhov chaw, ces lub caij nplooj ntoos hlav washers yuav tsis ua hauj lwm.
Kuv paub txhua yam yog txheeb ze, tab sis kuv pab tsis tau tab sis pom qhov exaggeration ntawm no nthuav me ntsis-hauv ib chav tsev ntau dua, "qhov loj axial load ntau tshaj li rau phaus"
Qhov no yog qhov kev xaiv tsis zoo.Cov menyuam bearings ua haujlwm zoo vim tias lawv txo qis kev sib txhuam los ntawm dov es tsis txhob rub-qhov teeb meem tshwm sim nrog rab koob rau cov menyuam thrust bearings yog tias qhov kawg ntawm rab koob ntawm o / d txav nrawm dua i / d (tshwj tsis yog lub koob lub ntsiab yog tapered) Yog, rau feem ntau cov ntawv thov, tsis muaj leej twg xav txog).Tau kawg muaj tapered koob rau cov menyuam thrust bearings, tab sis tus txiv neej no yog zoo dua los siv spherical thrust bearings es tsis txhob - nws yeej tsis muaj kev txwv rau lub axial load kom txog thaum lub bearing tawg los yog lub gasket yog indented, los yog qhov no yuav dhau 6 phaus.
Tsis tas li ntawd, tom qab teeb tsa lub preload kom zoo ntawm lub kheej kheej thrust bearing, nws yuav luag tsis muaj radial tsis kam.Lub tswv yim zoo, qee qhov kev xav tau tuaj yeem siv tau.
Kuv tsis muaj tseeb, kuv qhov kev xav yog tias nws siv rab koob ncaj rau cov menyuam bearings, tab sis cov kev sib tw hauv nruab nrab tsis zoo li qhov chaw.
Kuv nyiam sib tham txog txhua qhov sib txawv ntawm kev teeb tsa thiab kev teeb tsa, thiab kuv nyiam cov ntawv xov xwm uas npog tapered rollers thiab tapered thrust bearings hauv cov qauv tsim tiag.Nco kuv txog lub tshuab dhos uas kuv tab tom tsim.
Tsuas yog los ntawm daim duab, yog tias ua tau, kuv yuav tso ib qho kev txhawb nqa ntawm qhov kawg ntawm tus ncej ntawm stepper.Feem ntau ntawm kev hnav thiab sab load rog tuaj yeem ua tau zoo dua los ntawm kev txhawb nqa ntawm txoj haujlwm ntawm qhov siab tshaj plaws sab nraud deflection.
Pom zoo nrog cov lus hais txog tapered roller bearings, lub tshuab dhos spindle siv lawv nyob rau hauv khub preloaded rau pem hauv ntej vim hais tias lawv yog tsim los tiv thaiv ob qho tib si axial thiab lateral loads, ib yam li cov cab iav ntawm no tsim.
Lawv puas tuaj yeem siv cov servo hloov pauv hloov pauv, kab laug sab coupling, lossis plum coupling los cais cov ncej ntawm lub tshuab stepper los ntawm cov ncej uas tsav cov cab iav?Tsis paub meej txog qhov torsional load lawv tau cuam tshuam nrog.Los yog tej zaum 1: 1 iav?
Tom qab ntawd lawv tuaj yeem coj lub zog mus rau hauv lub cev muaj zog mounting ncej nrog yuav luag tsis muaj zog rau lub kauj ruam.
Koj yuav tsum siv cov kabmob uas tuaj yeem lees txais qhov kev cia siab thrust loads (angular contact, taper, thrust, etc.), nrog cov khoom los yog trapezoidal screws nyob rau hauv txhua rooj plaub.Lub cev muaj zog bearings feem ntau tsis tuaj yeem tiv taus cov khoom no, thiab kev ua haujlwm tsis zoo ntawm cov ntsia hlau yuav muaj kev cuam tshuam tsis zoo rau qhov raug.Qhov zoo tshaj plaws, cov ntsia hlau qhov chaw sib dhos yog 100% kev txhawb nqa tus kheej, tsis tas yuav txuas rau lub cev muaj zog, lub cev muaj zog tsuas yog muab torque.Qhov ntawd yog Tshuab Tsim 101. Yog tias lub load yog nyob rau hauv qhov kev qhia tshwj xeeb, koj tuaj yeem tso tseg cov kabmob thrust, tab sis feem ntau nws yog ib qho kev coj ua tsis zoo, vim tias qhov kev sib tw yuav ua rau cov khoom hauv lub cev tsis zoo, yog li cuam tshuam rau kev ua haujlwm. .Tsuas yog saib ntawm cov pob bearing zoo tib yam thiab tshawb xyuas qhov kev lees txais thrust load, koj yuav xav tsis thoob tias qhov tsawg npaum li cas ntawm qhov ntsuas qhov hnyav yog feem ntau.
Txij li thaum tsis muaj khawm hloov kho, kuv kuj tau ntxiv tias feem ntau, nyob ntawm qib ntawm qhov tseeb koj xav tau, worm gears siv rau txhua qhov kev xav thiab lub hom phiaj tuaj yeem suav tias yog pob lossis conical screws, vim tias cov rog yuav luag tib yam. .
Lub load ntawm cov cab iav yog qhov sib txawv ntawm qhov load ntawm Acme lossis pob ntsia hlau.Txij li thaum Acme thiab pob screws yog siv nrog tag nrho cov txiv ntseej, lub load yog yuav luag axial nkaus xwb.Cov cab tsuas ua haujlwm ntawm lub iav ntawm ib sab, yog li muaj qhov radial load.
Kuv yuav mus rau lwm txoj kev, thiab ntau tus neeg yuav xav tsis thoob kom pom qhov loj npaum li cas ntawm axial load peev ntawm lub pob bearing.Yam tsawg kawg 25% radial load, 50% hnyav dua / loj dua bearing.
Txawm li cas los xij, yog tias koj tsis xav ua lub neej luv luv thiab ua rau muaj kev puas tsuaj loj, thov txuas ntxiv siv cov qauv pob bearings los daws cov kev sib tsoo!FWIW, thaum tus qauv pob bearing bears lub thrust load, qhov chaw tiv tauj yog txo qis.Yog tias qhov luaj li cas ntawm cov kabmob loj txaus, koj yuav tsis pom dab tsi loj lossis txaus ntshai, tab sis qhov no tsis zoo, tshwj xeeb tshaj yog thaum koj cov khoom "pheej yig".
Tam sim no koj tsuas yog qhov rov qab.Yog tias cov chaw tsim khoom lag luam hais tias nws tsim nyog rau lub radial load ntawm x Newton, qhov no yog qhov specification.
Kuv cov nuj nqis yog raws li SKF phau ntawv qhia online.Tej zaum lawv yuav paub lawv qhov chaw zoo dua koj.Yog tias koj nyiam qhov kev sib cav tsis sib xws: maus taus log bearings yog ib khub ntawm qhov sib sib zog nqus groove npas, lawv pom cov rog hauv txhua qhov kev qhia yuav luag random, thiab tuaj yeem siv tau ntev.Kuv tsav yam tsawg kawg yog 120,000 mais hauv kuv qhov kev xeem.
Lub neej ntawd "pob kabmob" yog lub pob sib sib zog nqus.Yog tsis muaj dab tsi ntxiv, nws yog lub pob tob tob.Saib cov qeb ntawm no.https://simplybearings.co.uk/shop/Products-All-Bearings/c4747_4514/index.html
Los ntawm kev siv peb lub vev xaib thiab cov kev pabcuam, koj pom zoo meej rau qhov chaw ntawm peb qhov kev ua tau zoo, kev ua haujlwm thiab kev tshaj tawm cov ncuav qab zib.Kawm ntxiv